linux-toradex.git/arch, branch v3.5.7

efi: initialize efi.runtime_version to make query_variable_info/update_capsule workable

2012-10-12T20:47:22+00:00

commit d6cf86d8f23253225fe2a763d627ecf7dfee9dae upstream.

A value of efi.runtime_version is checked before calling
update_capsule()/query_variable_info() as follows.
But it isn't initialized anywhere.


static efi_status_t virt_efi_query_variable_info(u32 attr,
                                                 u64 *storage_space,
                                                 u64 *remaining_space,
                                                 u64 *max_variable_size)
{
        if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
                return EFI_UNSUPPORTED;


This patch initializes a value of efi.runtime_version at boot time.

Signed-off-by: Seiji Aguchi 
Acked-by: Matthew Garrett 
Signed-off-by: Matt Fleming 
Signed-off-by: Ivan Hu 
Signed-off-by: Greg Kroah-Hartman

efi: Build EFI stub with EFI-appropriate options

2012-10-12T20:47:22+00:00

commit 9dead5bbb825d7c25c0400e61de83075046322d0 upstream.

We can't assume the presence of the red zone while we're still in a boot
services environment, so we should build with -fno-red-zone to avoid
problems. Change the size of wchar at the same time to make string handling
simpler.

Signed-off-by: Matthew Garrett 
Signed-off-by: Matt Fleming 
Acked-by: Josh Boyer 
Signed-off-by: Greg Kroah-Hartman

Revert "KVM: VMX: Fix KVM_SET_SREGS with big real mode segments"

2012-10-12T20:47:22+00:00

This reverts commit b398aa3174cd.  It
causes a regression with some versions of ipxe.  3.6 has other fixes
that cannot be backported to 3.5, so it is better to live with the
minor problem that b398aa3174cd fixes.

https://bugzilla.redhat.com/show_bug.cgi?id=854983

Signed-off-by: Avi Kivity 
Signed-off-by: Greg Kroah-Hartman

score: Add missing RCU idle APIs on idle loop

2012-10-12T20:47:20+00:00

commit 0ee23fda59740767324b4340247ca41a2f498ca6 upstream.

In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in scores's idle loop.

Reported-by: Paul E. McKenney 
Signed-off-by: Frederic Weisbecker 
Cc: Chen Liqin 
Cc: Lennox Wu 
Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett 
Signed-off-by: Greg Kroah-Hartman

m32r: Add missing RCU idle APIs on idle loop

2012-10-12T20:47:20+00:00

commit 48ae077cfce72591b8fc80e1dcc87806f86fed7f upstream.

In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the m32r's idle loop.

Reported-by: Paul E. McKenney 
Signed-off-by: Frederic Weisbecker 
Cc: Hirokazu Takata 
Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett 
Signed-off-by: Greg Kroah-Hartman

cris: Add missing RCU idle APIs on idle loop

2012-10-12T20:47:20+00:00

commit c633f9e788928e91ad11f44df29b47bbbe9550b0 upstream.

In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the Cris's idle loop.

Reported-by: Paul E. McKenney 
Signed-off-by: Frederic Weisbecker 
Cc: Mikael Starvik 
Cc: Jesper Nilsson 
Cc: Cris 
Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett 
Signed-off-by: Greg Kroah-Hartman

alpha: Add missing RCU idle APIs on idle loop

2012-10-12T20:47:19+00:00

commit 4c94cada48f7c660eca582be6032427a5e367117 upstream.

In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the Alpha's idle loop.

Reported-by: Paul E. McKenney 
Signed-off-by: Frederic Weisbecker 
Tested-by: Michael Cree 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Matt Turner 
Cc: alpha 
Cc: Paul E. McKenney 
Reviewed-by: Josh Triplett 
Signed-off-by: Greg Kroah-Hartman

m68k: Add missing RCU idle APIs on idle loop

2012-10-12T20:47:19+00:00

commit 5b57ba37e82a15f345a6a2eb8c01a2b2d94c5eeb upstream.

In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the m68k's idle loop.

Reported-by: Paul E. McKenney 
Signed-off-by: Frederic Weisbecker 
Acked-by: Geert Uytterhoeven 
Cc: m68k 
Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett 
Signed-off-by: Greg Kroah-Hartman

mn10300: Add missing RCU idle APIs on idle loop

2012-10-12T20:47:19+00:00

commit 5b0753a90b7a98bc613c3767e9263a1a76d4f900 upstream.

In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the mn10300's idle loop.

Reported-by: Paul E. McKenney 
Signed-off-by: Frederic Weisbecker 
Cc: David Howells 
Cc: Koichi Yasutake 
Signed-off-by: Paul E. McKenney 
Acked-by: David Howells 
Reviewed-by: Josh Triplett 
Signed-off-by: Greg Kroah-Hartman

frv: Add missing RCU idle APIs on idle loop

2012-10-12T20:47:18+00:00

commit 41d8fe5bb3cf91ce2716ac8f43e4b40d802a99c8 upstream.

In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the Frv's idle loop.

Reported-by: Paul E. McKenney 
Signed-off-by: Frederic Weisbecker 
Cc: David Howells 
Acked-by: David Howells 
Reviewed-by: Josh Triplett 
Signed-off-by: Greg Kroah-Hartman